WO2016134775A1 - Bone plate and surgical kit for fixing bone fragments - Google Patents
Bone plate and surgical kit for fixing bone fragments Download PDFInfo
- Publication number
- WO2016134775A1 WO2016134775A1 PCT/EP2015/054055 EP2015054055W WO2016134775A1 WO 2016134775 A1 WO2016134775 A1 WO 2016134775A1 EP 2015054055 W EP2015054055 W EP 2015054055W WO 2016134775 A1 WO2016134775 A1 WO 2016134775A1
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- WIPO (PCT)
- Prior art keywords
- bone
- contour
- screw
- screw head
- bone plate
- Prior art date
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Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/80—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates
- A61B17/8004—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates with means for distracting or compressing the bone or bones
- A61B17/8009—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates with means for distracting or compressing the bone or bones the plate having a ratchet
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/80—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates
- A61B17/8004—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates with means for distracting or compressing the bone or bones
- A61B17/8014—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates with means for distracting or compressing the bone or bones the extension or compression force being caused by interaction of the plate hole and the screws
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/80—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates
- A61B17/8052—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates immobilised relative to screws by interlocking form of the heads and plate holes, e.g. conical or threaded
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/84—Fasteners therefor or fasteners being internal fixation devices
- A61B17/86—Pins or screws or threaded wires; nuts therefor
- A61B17/8605—Heads, i.e. proximal ends projecting from bone
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/80—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates
- A61B17/8061—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates specially adapted for particular bones
Definitions
- the present invention relates to bone plates, Opera ⁇ tion sets and method for fixing a bone plate.
- the known bone plates are first attached by means of a first bone screw to a first of the two bone fragments. Subsequently, a second bone screw is inserted through the compression hole into a second of the two bone fragments. When screwing in the second bone screw slides the bottom of the screw head on the
- a bone plate can be fixed to a bone with stable angles. It is very important when the bone screw can be attached to the bone plate at a variable angle to accommodate the individual anatomy of the patient being treated.
- US 7,354,441 B2 discloses a combination hole having a first, substantially circular area and a second, elongated area.
- the first area has a thread. Due to the contour of the combination hole, a compression of the bone fragments to be connected takes place when a bone screw is screwed in.
- WO 00/66012 A1 discloses blockable bone plates.
- a compression osteosynthesis is illustrated. Screwing bone screws into a compression hole moves the bone fragments towards each other so that a fracture gap formed between them closes.
- variable verwendba ⁇ ren holes may be employed a compression screw to effect a compression, or it may be inserted a locking screw to a range interlock for he ⁇ .
- the holes have compression surfaces and specially shaped curved tracks.
- cams which are guided along the curved paths.
- a bone screw without cams is used. When the screw is screwed in, its head slides down the compression surface .
- WO 2010/115403 Al is concerned with the stable angle Fixa ⁇ tion and the compression of a fracture point, both func ⁇ nen to be achieved simultaneously with a single bone screw.
- the bone plate has a fixation and compression hole, which is formed from two circular holes which have different diameters. point. This creates a crescent-shaped extension.
- a fine thread is provided in the hole .
- the holes of the bone plates disclosed in EP 2 364 658 A1 include a first region, a second region and a transition region.
- the transition region is designed so that a lateral movement between the plate and screw is possible.
- the transition region contains a chamfer, which leads to a compression.
- the WO 2011/160846 Al discloses bone plates with two ver ⁇ secreted large, intersecting-stage round holes in their upper regions a circumferential rib extends.
- the bone plates according to the invention should be able to be used with various bone screws (with conical seating surfaces or ball seating surfaces).
- a threaded bone screw on the screw head can be based on the rib of the smaller round hole ⁇ and allow engagement for the rib of the larger round hole, creating a mutual clamping.
- WO 2012/000627 A1 also discloses a bone plate with two differently sized, intersecting, stepped round holes, in the upper regions of which a rib extends.
- the US 2012/0197307 AI discloses a combined screw ⁇ benloch for blocking and compressing.
- WO 2004/086990 AI discloses receiving openings for bone plates, which allow a locking of the bone screws at different angles relative to the bone plate. Some embodiments have a slot with blocking contour, which can be used for the Kompressionsosteosynthese.
- WO 2014/033088 AI discloses a two-piece Knochenplat ⁇ te with a main body and a movable part.
- the moving part has a rack. By rotation of a gear this can interact with the rack so that the two parts are moved relative to each other, whereby compression can be achieved. But not automatically screwing a bone screw resulting in a Kom ⁇ pression of the joining bone fragments.
- a blocking can not be achieved directly, let alone one at different angles relative to the bone plate.
- the US 2012/0197303 AI deals with bone plates with long ⁇ holes, on one side of a rack is arranged.
- a pinion shaft arrangement can be used.
- the screw openings of these bone plates do not contain contours that allow both compression and locking, let alone interlocking at various angles relative to the bone plate.
- the US 2009/0234359 AI discloses a bone plate with a slot, which has a rack.
- a pinion can be used by the rotation of a compression can be brought about.
- the bone plate is to have at least one receiving opening for a bone screw ⁇ that allows both a compression and a blocking.
- the best possible transfer of force is to be achieved during compression, without the bone plate must have an excessive thickness only for this purpose in the receiving ⁇ opening.
- the receiving opening should allow blocking at different angles relative to the bone plate.
- This bone plate has at least one receiving opening for a bone screw with egg ⁇ nem screw head.
- the receiving opening contains a Kom ⁇ pressions Scheme with a compression contour and a Verblockungs Scheme with a Verblockungskontur.
- the compression contour is designed and arranged such that a rotation of the bone screw in a screwing direction causes a Lateralbewe ⁇ tion of the bone screw in the direction of Verblockungs Kunststoffes.
- the compression contour is designed as an engagement contour, so that the lateral movement can be generated at least partially, in particular completely, by engagement between the engagement contour and a mating contour on the screw head.
- That the lateral movement "at least partially" by an engagement between the engagement contour and a counter contour on Screw head can be generated, in this case means that this handle A ⁇ during at least part of the compression process is present. So this does not exclude that, during a portion thereof the compression process is no such engagement prior to ⁇ ⁇ or lateral movement is in any event not produced thereby.
- the lateral movement is thus not exclusively generated by a sliding down the underside of the screw head on a sliding surface of the compression contour, which is called forth ⁇ by the axial movement of the bone screw. Instead, the rotation of the bone screw in its insertion direction by an engagement between the engagement contour and the mating contour at least partially or even completely ensures this lateral movement. In this way, an advantageous transmission of forces can be achieved without the bone plate having to have an excessive thickness in the region of the receiving opening for this purpose.
- Both the compression region and the blocking region may have a respective major axis.
- Such main ⁇ axis of the compression area has the property that a bone screw is at least one such ⁇ settable in the compression zone, that their longitudinal axis runs parallel to said main axis. It is conceivable that the bone screw can be inserted in such a way into the compression area in addition that its longitudinal axis within the main axis of the compression preparation ⁇ ches runs containing solid angle range. In this case the said main axis is not clearly defined, ie several mutually different axes can be understood as the main axis in the sense of the above definition.
- a main axis of the Verblockungs Kunststoffes has the property that a bone screw is at least as insertable into the Verblockungs Kunststoff that its longitudinal axis is parallel to this major axis. It is conceivable that the bone ⁇ chenschraube be used in such the addition Verblockungs Kunststoff that its longitudinal axis within the main axis of Verblockungs Kunststoffes containing solid angle range ver ⁇ running.
- the major axis is not defined above eindeu ⁇ kind, ie a plurality of different axes can be understood as a major axis in the sense of the above definition.
- the main axis of the compression region and the main axis ⁇ of the Verblockungs Kunststoffes can independently voneinan ⁇ perpendicular or inclined to the plane of the plate extend.
- the main axis of the compression region and the main axis of the Ver ⁇ blocking region may have a distance from each other, which is in the range of 0.2 mm to 5 mm, preferably 0.5 mm
- the lateral movement is at least partially, in particular completely, generated by a rolling of the screw head along a part of the engagement contour, in particular along a rolling region which will be described below.
- a rolling and is understood in the following that the screw head rolls along a portion of the engagement contour which can be overlaid by a gliding at this unwinding ⁇ here.
- This rolling is thus carried out according to the principle of a toothing between two gears or a gear and a rack.
- Such rolling allows precise guidance of the Schrau ⁇ benkopfes and reduces material abrasion which would occur when pure sliding.
- pressing the bone screw Be on the bone plate as a condition for the lateral movement practically not required.
- the movement can take place on theoretically unlimited long and / or on non-straight tracks.
- That the lateral movement is "at least partially" generated by a Abical ⁇ zen means here that the lateral movement during at least part of the compression process by rolling is generated and / or only a rolling between individual parts of the engagement contour and / or the mating contour can be generated .
- the formulation for ⁇ "at least partially” detects that during a ⁇ at the part of the compression process, the lateral movement is not produced by a rolling. From the phrase "at least partially” is also recognized that a first part of the screw head is passed on a first part of the engagement contour, while at the same time a second part of the screw ⁇ head slides on a second part of the engagement contour along.
- the engagement contour on at least one politicianssflä ⁇ surface along which during the rotation of Knochenschrau ⁇ be in its screwing a lower side of the screw head can be guided.
- Such guidance allows a more precise BEWE ⁇ supply the screw head. It can also contribute to the generation of the lateral movement, wherein the lateral movement according to the invention, however, at least partially or even only by the engagement between the engagement contour and the mating contour is generated.
- said guide ensures that the screw head pulls the bone plate in the direction of the bone fragment into which it is screwed.
- the guide surface is preferably formed like a cycloid. Under a cycloid-like training is here and below understood such a condition of the guide surface, the it ermony carbonate, in particular a Un ⁇ underside of a Verblockungsvorsprunges of the bone screw to ⁇ least during a portion of the resulting movement of the helical movement of the bone screw about its
- the guide surface is designed so that along this guide surface during rotation of the bone screw in its screwing a bottom of a radially arranged on the screw head locking projection is feasible.
- a blocking projection can serve to block the screw head on the blocking contour, as will be explained in detail below. The Verblockungsvorsprung can thus ensure both the leadership of the screw head during compression and for the subsequent blocking; So he can do a double function.
- the guide is preferably carried out along a longitudinal axis of the bone ⁇ chenschraube, ie in the direction in which the bone screw is screwed into the bone.
- the engagement contour may have at least a Abicalz Scheme at which a radially arranged on the screw head Verblo ⁇ ckungsvorsprung during at least part of the Lateralbewe ⁇ supply is rollably.
- the Abracelz Scheme, a bottom surface and an axis extending between the top and the bottom surface side surface contained ⁇ th, said radially disposed on the screw head Ver ⁇ blocking projection is rollably during at least part of the Lateralbe ⁇ movement at this Seit Structure.
- the bottom surface may run parallel to an upper side of the bone plate. Age- natively but it is also conceivable and within the scope of the invention that the bottom surface in the above sense zykloidenartig out forms ⁇ is.
- the locking contour is such forms ⁇ out that the bone screw re ⁇ tively can be locked to the bone plate at different angles.
- WUR As explained above ⁇ en, the main axis of Verblockungs Kunststoffes need not necessarily be clearly defined.
- the bone screw is thus not only so blockable in the blocking area that its longitudinal axis is parallel to a single possible major axis of the Verblo ⁇ ckungs Kunststoffes, but also in deviating orientations. This has the advantage already explained above that the individual anatomy of the treated patient can be taken into account.
- the blocking region and in particular its blocking contour can have one, several or all of the features disclosed in WO 2004/086990 A1.
- the relevant disclosure of WO 2004/086990 AI is hereby expressly incorporated in of the products contained ⁇ restrictive registration.
- the locking contour may have at least a Ausneh ⁇ mung which widens in a wedge shape outwards from a main axis of the Verblockungs Schemees away in order to accommodate a radially disposed on the screw head and interlock tab can interlock.
- This wedge-shaped design allows a radial clamping of the screw head, in particular arranged on the screw head locking projections when the bone screw is rotated about its longitudinal axis.
- the locking contour is at least at least approximately spherical Be ⁇ area of the recess, paraboloi- disch formed ellipsoidal or hyperboloidisch.
- the blocking contour in the region of the recess is At least approximately spherically formed, this allows a blockage of the bone screw at different angles relative to the bone plate.
- the recess of the blocking contour is preferably arranged so that it rotates in a direction perpendicular to the main axis of the Verblockungs Kunststoffes.
- the locking contour can be at least two, preferably Minim ⁇ least three and particularly preferably exactly three recesses ⁇ indicate that extend each in a wedge shape outwards from the main axis of the Verblockungs Kunststoffes away.
- the screw head can be locked particularly stable in the blocking contour. This is especially true if the Ausneh ⁇ ments extend uniformly in the circumferential direction around the main axis of the Verblockungs Kunststoffes around.
- the mating contour can be formed by at least one of the blocking projections and / or at least one of the recesses arranged between the blocking projections.
- the Verblockungsvorsprünge and / or the recesses can serve both the generation of the lateral movement during compression and the subsequent blocking; So you can do a double function.
- a longitudinal axis of the bone screw extends during the lateral movement in the direction of the blocking region along a straight-line path.
- this web is at least partially or even completely curved.
- Another aspect of the invention relates to a Operationsset containing at least one as disclosed above inventive bone plate and at least one bone screw with a screw head, which can be used in at least one ofcountöff ⁇ voltages of the bone plate.
- the bone screw can be used in the manner already explained in detail together with the bone plate to cause the just ⁇ explained benefits.
- the bone screw it may be a known bone screw, if it has the characteristics described above in order to interact with the bone plate in the beschrie ⁇ surrounded way.
- the bone screw one, several or sämtli ⁇ che disclosed in WO 2004/086990 AI characteristics.
- the relevant disclosure of WO 2004/086990 AI is hereby expressly incorporated into the present application.
- the screw head is provided with a radially arranged on the screw ⁇ head interlock tab having a circumferential outer surface which extends substantially in the direction of a longitudinal axis of the bone screw and has at least one clamping surface, which, viewed in an azimuth plane perpendicular ⁇ right to the longitudinal axis, a wedge-shaped externally expanded from the longitudinal axis, to the screw head with the Verblo ⁇ ckungskontur, in particular with their recesses caking.
- a radially arranged on the screw ⁇ head interlock tab having a circumferential outer surface which extends substantially in the direction of a longitudinal axis of the bone screw and has at least one clamping surface, which, viewed in an azimuth plane perpendicular ⁇ right to the longitudinal axis, a wedge-shaped externally expanded from the longitudinal axis, to the screw head with the Verblo ⁇ ckungskontur, in particular with their recesses caking.
- Another advantage is the surrounding outer surface of the
- Screw head at least in the region of the clamping surface at least approximately spherical, paraboloidal, ellipsoidal or hyperboloidal.
- the circumferential outer surface of the screw head has at least three, preferably exactly three uniformly distributed along its circumference clamping surfaces on ⁇ , widening each wedge-shaped outwardly away from the longitudinal axis of the bone screw away.
- the blocking area can be provided with a particular spherical countersink for receiving, for example, one
- Screw head with spherical head bottom Screw head with spherical head bottom.
- Another aspect of the invention relates to a method for fixing a bone plate according to the invention as described above to two bone fragments to be joined.
- This method comprises the steps of: a) fixing the bone plate to a first bone fragment using a first bone screw, b) inserting a second bone screw through the compression area of the receiving opening into a second bone fragment, c) rotating the second bone screws in a screwing direction, thereby causing lateral movement the second bone screw is effected in the direction of the Verblockungs Suitees and the lateral movement is at least partially, in particular completely, generated by an engagement between the engagement contour and a mating contour on the screw head.
- the second bone screw may be one having several re ⁇ or all of the features described above in connection with the inventive Operationsset.
- the bone screw can pass through a receiving opening of the bone plate into the first bone fragment be screwed.
- This receiving opening can have the inventive engagement and blocking contours.
- it may also be a known from the prior art receiving opening, for example, as in
- the method still further subsequent step may include: d) blocking of the second bone screw in the Verblockungs ⁇ contour.
- Figure la a bone plate according to the invention in the form of a
- Figure lb the bone plate according to FIG la in a perspec ⁇ positivist rule view
- FIG. 2a shows a detailed view of one of the receiving openings of FIG
- FIG. 2b shows the detailed view according to FIG. 2a in a second perspective view
- FIG. 3a shows the detail view according to Figures 2a and b in one
- 3b shows a sectional view taken along line CC in Fi gur ⁇ 3a;
- Figure 3c is a sectional view taken along line DD in Fi gur ⁇ 3a;
- FIG. 4a shows a bone screw in a perspective view;
- FIG. 4b shows the bone screw according to FIG. 4a in a plan view
- FIG. 5a shows the detailed view according to FIG. 2a with one in one
- FIG. 5b shows the detail view according to FIG. 5a in a second perspective view
- Figure 6a the detail view according to Figures 5a and b in one
- Figure 6b is a sectional view taken along the line EE in Fi gur ⁇ 6a (however, the bone screw is not shown ge ⁇ cut);
- Figure 6c is a sectional view taken along line FF in Fi gur ⁇ 6a (however, the bone screw is not shown ge ⁇ cut);
- Figure 7a the detail view according to figure 2a with the bone screw ⁇ in the transition region between the compression zone and Verblockungs Scheme in a first perspective view;
- FIG. 7b shows the detail view according to FIG. 7a in a second perspective view
- FIG. 8 a the detailed view according to FIGS. 7 a and b in one
- Figure 8b is a sectional view taken along line GG in Fi gur ⁇ 8a (wherein, however, the bone screw is not shown ge ⁇ cut);
- Figure 8c is a sectional view taken along line HH in Fi gur ⁇ 8a (wherein, however, the bone screw is not shown ge ⁇ cut);
- Figure 9a the detail view according to figure 2a with the bone screw in ⁇ Verblockungs Scheme in a first perspective view
- FIG. 9b shows the detail view according to FIG. 9a in a second perspective view
- FIG. 10 a the detailed view according to FIGS. 9 a and b in one
- Figure 10b is a sectional view taken along the line II in Fi gur ⁇ 10a (however, the bone screw is not shown ge ⁇ cut);
- Figure 10c is a sectional view taken along line JJ in Fi gur ⁇ 10a (however, the bone screw is not shown ge ⁇ cut).
- Figures la and lb show two views of a dylusplatte as Con- formed bone plate 1. This includes a top 26, a parallel thereto extending bottom 27 and two further described in detail below according to the invention on ⁇ transfer apertures 2 and six non-inventive receiving openings 20 which all to extend from the top 26 to the Untersei ⁇ te 27th
- the noninventive receiving apertures 20 may, for example, an Al evidently ⁇ te locking contour as described in WO 2004/086990.
- Figures 2a, 2b and 3a to 3c show one of the two recognizable in Figure 1 receiving openings 2 in two different perspective views, a plan view and two sectional views.
- the receiving opening 2 contains a compression region 5 with a compression contour formed as an engagement contour 6 and a blocking region 7 with a blocking contour 8.
- the compression region 5 and the blocking region 7 each have a circular silhouette, these two circular silhouettes penetrating each other.
- Through the center of the circular outline of the compres sion ⁇ portion 5 and perpendicular to the top surface 26 of the Knochenplat ⁇ te 1 has a major axis K passing the compression area 5.
- the engagement contour 6 has a cycloid-like guide surface 10. Between the guide surface 10 and a Obersei ⁇ te 26 of the bone plate 1 is an inclined side ⁇ wall 23 is formed.
- the engagement contour 6 further includes a Ab ⁇ ⁇ ⁇ ⁇ ⁇ lz Scheme 13, which includes a parallel to the top 26 extending bottom surface 21 and between the top 26 and the bottom ⁇ surface 21 extending side surface 22.
- the engagement contour 6 has two projections 14, 14 'extending in a radial direction R.
- the radial direction R is understood here with respect to the main axis K of the compression ⁇ ons Kunststoffes 5.
- the first protrusion 14 is arranged between the guide surface 10 and the rolling region 13. more precisely, at the point where the top side 26 of the bone plate 1, the guide surface 10 and the side surface 22 of the Abisselzberei ⁇ ches 13.
- the second protrusion 14 ' is arranged between the Abicalz Scheme 13 and the locking contour 8 - more precisely, at the point of contact of the bottom surface 21 of the Abicalz Schemees 13 , the zy ⁇ -cylindrical wall portion 24 and one of the three below-described recesses sixteenth
- the blocking contour 8 has three recesses 16, two of which are interrupted by the compression region 5.
- the three recesses 16 extend wedge-shaped outward away from a main axis L of the Verblockungs Symposiumes 7 away.
- the blocking contour 8 is in each case spherical.
- the recesses 16 may also be designed, for example, paraboloidally, ellipsoidally or hyperboloidally.
- the recesses 16 are further arranged so that they rotate in a direction perpendicular to the main ⁇ axis L of the Verblockungs Kunststoffes 7.
- the azimuth plane A corresponds to the drawing planes of FIG. 3a.
- Each of the three recesses 16 is adjoined in each case by an outlet contour 25, which serves to remove a bone screw, in order to be able to remove it more easily from the receiving opening 2.
- a countersink 28 is provided, which can serve to accommodate a screw head with a spherical head underside.
- a cylindrical cutter can be used, with which the silhouette of the compression region 5 is made.
- the cylindrical wall portion 24 is from this first
- Step. The other contours of the receiving opening 2 can then in a second step by means of a as disclosed in WO 2004/086990 AI milling cutter are made containing egg ⁇ NEN convex cutter head with an at least approximately spherically shaped contour.
- FIGS 4a and 4b show a bone screw 3, which win ⁇ kelvariabel can be used in each of the receiving ports 2, 20 of the bone plate.
- This bone screw 3 is identical to that disclosed in WO 2004/086990. It has a shaft 19 with a thread 29 and a screw head 4, which projects beyond the shaft 19 and the thread 29 to the outside.
- the screw head 4 has an engagement contour 30 into which, for example, a screwdriver can be inserted in order to turn the bone screw 3 in or out.
- the screw head 4 is provided with a circumferential outer surface 17 which extends substantially in the direction of a longitudinal axis M of the bone screw 3 and three circumferentially uniformly distributed, radially extending Verblockungsvorsprünge 12, 12 ', 12'' having respective clamping surfaces 18. Between the Verblockungsvorsprüngen 12, 12 ', 12''recesses 15, 15', 15 '' are respectively formed.
- the blocking projections 12, 12 ', 12''and the recesses 15, 15', 15 'formed between them form a mating contour 9 which, together with the engagement contour 6 of the bone fragments, plate 1 can cause a lateral movement of the bone screw 3.
- these clamping surfaces 18 make it possible to lock the screw head 4 to the blocking contour 8, and at different angles relative to the bone plate, as described in detail in WO 2004/086990 A1 (which, however, only has a receiving opening without the inventive - sen compression area disclosed).
- the bone plate 1 is first fixed by placing a bone screw through one of the plate holes 20 in FIG. 1a / b in a step a), not shown here, on a first bone fragment not shown here.
- a second Knochenschrau ⁇ be 3 through the compression zone 5 of the receiving opening 2 therethrough is inserted into the second bone fragment.
- ⁇ point take the bone screw 3 and the receiving opening 2, the relative position shown in Figures 5a to 6c.
- the shaft 19 is screwed into the second bone fragment, not shown here for the sake of simplicity.
- An underside 11 of a ers ⁇ th Verblockungsvorsprungs 12 abuts the guide surface 10 and also on the side wall 23rd
- the bone screw 3 moves thereby in the direction of its longitudinal axis M, and the shaft 19 is further driven into the second bone ⁇ chenfragment.
- the underside 11 of the first locking projection 12 slides down on the cycloid-like guide surface 10 and along the side wall 23.
- the slope of the guiding surface 10 on the underside 11 of the Verblockungsvorsprunges 12 and the thread pitch of the shaft 19 is tuned. This already contributes to a lateral movement of the bone screw 3 in the direction of the Verblockungsbe ⁇ rich 7, ie in the lateral direction F, at. Relative to the second bone fragment on which the second bone screw 3 buildin ⁇ is Untitled, thus moves the bone plate 1 opposite to the lateral direction F.
- this lateral movement is additionally produced by an engagement between the engagement contour 6 and the mating contour 9 on the screw head 4:
- the second locking projection 12 ' is rolled on the side surface 22 of the rolling region 13.
- the soflä ⁇ che 22 of Abicalz Kunststoffes 13 is matched to the Verblockungs ⁇ projection 12 'and the thread pitch of the shaft 19 accordingly.
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Abstract
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Priority Applications (9)
Application Number | Priority Date | Filing Date | Title |
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ES15706811T ES2750622T3 (en) | 2015-02-26 | 2015-02-26 | Osteosynthesis plate and surgical kit to fix bone fragments |
EP15706811.5A EP3261566B1 (en) | 2015-02-26 | 2015-02-26 | Bone plate and surgical kit for fixing bone fragments |
CN201580076921.9A CN107257668B (en) | 2015-02-26 | 2015-02-26 | Bone plate and surgical kit for fixing bone fragments |
JP2017545286A JP6527591B2 (en) | 2015-02-26 | 2015-02-26 | Bone plate and surgical kit for fixing bone fragments |
US15/546,351 US10561450B2 (en) | 2015-02-26 | 2015-02-26 | Bone plate and surgical kit for fixing bone fragments |
MX2017010834A MX2017010834A (en) | 2015-02-26 | 2015-02-26 | Bone plate and surgical kit for fixing bone fragments. |
BR112017016695-0A BR112017016695B1 (en) | 2015-02-26 | 2015-02-26 | BONE PLATE AND SURGICAL KIT FOR FIXING BONE FRAGMENTS |
PCT/EP2015/054055 WO2016134775A1 (en) | 2015-02-26 | 2015-02-26 | Bone plate and surgical kit for fixing bone fragments |
AU2015383955A AU2015383955B2 (en) | 2015-02-26 | 2015-02-26 | Bone plate and surgical kit for fixing bone fragments |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/EP2015/054055 WO2016134775A1 (en) | 2015-02-26 | 2015-02-26 | Bone plate and surgical kit for fixing bone fragments |
Publications (1)
Publication Number | Publication Date |
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WO2016134775A1 true WO2016134775A1 (en) | 2016-09-01 |
Family
ID=52595337
Family Applications (1)
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---|---|---|---|
PCT/EP2015/054055 WO2016134775A1 (en) | 2015-02-26 | 2015-02-26 | Bone plate and surgical kit for fixing bone fragments |
Country Status (9)
Country | Link |
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US (1) | US10561450B2 (en) |
EP (1) | EP3261566B1 (en) |
JP (1) | JP6527591B2 (en) |
CN (1) | CN107257668B (en) |
AU (1) | AU2015383955B2 (en) |
BR (1) | BR112017016695B1 (en) |
ES (1) | ES2750622T3 (en) |
MX (1) | MX2017010834A (en) |
WO (1) | WO2016134775A1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2018110864A (en) * | 2017-01-13 | 2018-07-19 | グローバス メディカル インコーポレイティッド | Stabilization systems |
US11432857B2 (en) | 2016-08-17 | 2022-09-06 | Globus Medical, Inc. | Stabilization systems |
US11612422B2 (en) | 2016-08-17 | 2023-03-28 | Globus Medical Inc. | Stabilization systems |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2016011241A1 (en) * | 2014-07-16 | 2016-01-21 | The Regents Of The University Of Colorado | System and methods for positioning of two or more interacting elements |
KR101722747B1 (en) * | 2015-02-25 | 2017-04-03 | 주식회사 제일메디칼코퍼레이션 | Bone plate system |
KR102132188B1 (en) * | 2018-04-25 | 2020-07-09 | 주식회사 멘티스로지텍 | Pedicle screw assembly capable of largely forming an angle at which a pedicle screw is bent |
HRP20190451A2 (en) | 2019-03-06 | 2020-09-18 | Janoš Kodvanj | Screw with a variable locking angle and the corresponding system of locking |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1093762A2 (en) * | 1999-10-18 | 2001-04-25 | Bernd Schäfer | Bone plate |
WO2004086990A1 (en) * | 2003-04-03 | 2004-10-14 | Medartis Ag | Housing for a locking element and locking element |
US20090234359A1 (en) * | 2005-12-01 | 2009-09-17 | Hidetoshi Onoue | Mechanism for Osteosynthesis |
US20090264934A1 (en) * | 2008-04-22 | 2009-10-22 | Youssef Jim A | Bone plate system configurable as static or dynamic implant |
Family Cites Families (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1505513A (en) * | 1966-11-02 | 1967-12-15 | Benoist & Girard Reunis | Osteosynthesis plate |
US3528085A (en) * | 1968-03-22 | 1970-09-08 | Walker Reynolds Jr | Bone compression plate |
AU3954200A (en) | 1999-05-03 | 2000-11-17 | Medartis Ag | Blockable bone plate |
BR0017018A (en) | 2000-01-27 | 2002-11-05 | Synthes Ag | Bone plate |
WO2002098276A2 (en) * | 2001-06-04 | 2002-12-12 | Michelson Gary K | Dynamic anterior cervical plate system having moveable segments, instrumentation, and method for installation thereof |
US7766948B1 (en) * | 2005-05-05 | 2010-08-03 | Ebi, Llc | Bone fixation assembly |
ES2298921T3 (en) * | 2005-12-23 | 2008-05-16 | Aap Implantate Ag | OSEA PLATE. |
US20080015592A1 (en) | 2006-06-28 | 2008-01-17 | Depuy Products, Inc. | CAM/compression lock plate |
DE102009016394B4 (en) | 2009-04-07 | 2016-02-11 | Merete Medical Gmbh | Device for stable-angle fixation and compression of a fracture site or osteotomy on a bone |
WO2011032140A1 (en) * | 2009-09-14 | 2011-03-17 | Synthes Usa, Llc | Variable angle compression plate |
EP2364658B1 (en) | 2010-03-10 | 2012-08-29 | aap Implantate AG | Bone plate system |
DE102010025001B4 (en) * | 2010-06-24 | 2016-08-04 | Aap Implantate Ag | Fixation system with bone plate and bone screw |
DE102010025000B4 (en) | 2010-06-24 | 2016-01-21 | Aap Implantate Ag | bone plate |
DE102010025702B4 (en) | 2010-06-30 | 2016-08-18 | Aap Implantate Ag | Fixation system for bone with bone plate and bone screws |
US8685067B2 (en) | 2010-12-21 | 2014-04-01 | Competitive Global Medical, Llc | Compression plate apparatus |
US8551095B2 (en) | 2011-02-02 | 2013-10-08 | Bionet Manufacturing, LLC | Bone plate having combination locking and compression screw holes |
WO2014033088A1 (en) | 2012-08-28 | 2014-03-06 | Koc Universitesi | Bone plate |
-
2015
- 2015-02-26 ES ES15706811T patent/ES2750622T3/en active Active
- 2015-02-26 WO PCT/EP2015/054055 patent/WO2016134775A1/en active Application Filing
- 2015-02-26 US US15/546,351 patent/US10561450B2/en not_active Expired - Fee Related
- 2015-02-26 EP EP15706811.5A patent/EP3261566B1/en active Active
- 2015-02-26 CN CN201580076921.9A patent/CN107257668B/en not_active Expired - Fee Related
- 2015-02-26 BR BR112017016695-0A patent/BR112017016695B1/en not_active IP Right Cessation
- 2015-02-26 MX MX2017010834A patent/MX2017010834A/en unknown
- 2015-02-26 AU AU2015383955A patent/AU2015383955B2/en not_active Ceased
- 2015-02-26 JP JP2017545286A patent/JP6527591B2/en not_active Expired - Fee Related
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1093762A2 (en) * | 1999-10-18 | 2001-04-25 | Bernd Schäfer | Bone plate |
WO2004086990A1 (en) * | 2003-04-03 | 2004-10-14 | Medartis Ag | Housing for a locking element and locking element |
US20090234359A1 (en) * | 2005-12-01 | 2009-09-17 | Hidetoshi Onoue | Mechanism for Osteosynthesis |
US20090264934A1 (en) * | 2008-04-22 | 2009-10-22 | Youssef Jim A | Bone plate system configurable as static or dynamic implant |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11432857B2 (en) | 2016-08-17 | 2022-09-06 | Globus Medical, Inc. | Stabilization systems |
US11612422B2 (en) | 2016-08-17 | 2023-03-28 | Globus Medical Inc. | Stabilization systems |
JP2018110864A (en) * | 2017-01-13 | 2018-07-19 | グローバス メディカル インコーポレイティッド | Stabilization systems |
JP7257740B2 (en) | 2017-01-13 | 2023-04-14 | グローバス メディカル インコーポレイティッド | stabilization system |
Also Published As
Publication number | Publication date |
---|---|
BR112017016695B1 (en) | 2021-12-14 |
MX2017010834A (en) | 2017-12-07 |
CN107257668A (en) | 2017-10-17 |
JP2018506383A (en) | 2018-03-08 |
JP6527591B2 (en) | 2019-06-05 |
CN107257668B (en) | 2020-05-12 |
EP3261566A1 (en) | 2018-01-03 |
AU2015383955A1 (en) | 2017-09-07 |
US20180021071A1 (en) | 2018-01-25 |
EP3261566B1 (en) | 2019-07-17 |
US10561450B2 (en) | 2020-02-18 |
ES2750622T3 (en) | 2020-03-26 |
BR112017016695A2 (en) | 2018-04-10 |
AU2015383955B2 (en) | 2020-10-15 |
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